Breakage-indicating mechanism for warping machines and the like



June 24, 1930. w, REINERS ET AL 1,765,881

BREAKAGE INDIGATING MECHANISM FOR WARPING MACHINES AND THE LIKE Filed March 8, 1929 2 Sheets-Sheet l June 24, 1930.' w; REINERS ET AL' 1,765,881

BREAKAGE INDICATING MECHANISM FOR WARPING MACHiNES AND THE LIKE Filed March 8, 1929 2 Sheets-Sheet 2 Patented June 24, 1930 .UNITED STATES PATENT OFFICE WILHELM REINERS AND GUSTAV KAHLISCH, F MUNICH-GLADBACH, GERMANY, AS

SIGNORS TO W.' SCHLAFHORST & 00., OF MUNICH-GLADBACH, GERMANY, A CORPO- RATION OF GERMANY BREAK'AGEQINDIGATING mncnamsm. FOR wAnrme MACHINES} AND THE LIKE Application iuea March a, 1929; Serial No.

The invention relates tome'chanisms indicating breakage of a thread and intended for warping frames and the like and thecreels co-operating therewith. 4 v

The mechani ms hitherto known for automatically indicating breakage of a thread are designed to'giv'e upon a thread breaking either light or colorsi'gnals bypurely electric means or other signals by mechanical 0 or electro-mechanical means. In all these mechanisms an individual signal is provided for each thread, Recently these mechanisms however have been abandoned, as, on the one hand, owing to the comparatively great number of threads treated in these machines and to the small space existing between them, I the space at disposal for each individual thread signal is too small to enable the provision of a suflici'ently plainly perceptible signal,'and as,'o' he'other hand, the first and maintena sts of these mechanisms The invention has for its object to obviate thesedraw-backs, which object is ob- 5 tained by' not providing a signal for each thread, but a common si n'al only for'groups or ribbons of threads. pon thus a thread or several threads breaking in the respective group or ribbon, the appurtenant common signal will at once indicate the group or ribbon in which the breakage occurred,and this by a signalling means of so great and easily perceptible dimensions that the place on the machine or creel where the breakage took 5 place can be found quickly. and absolutely reliably.

As according to the present invention all the stop motion feelers of a group or ribbon of threads have common contact plates, be-

i sides the expensive individual signal also the -,electric' conduit leading to these individual v signals is dispensed with, this resulting in the considerable reduction aimed at of the costs of the entire mechanism. Thesignals themselves may be given optically, e. g. by electric lamps or colored plates, or at the same time acoustically by electrically or mechanically actuated bells or the like and may be tripped purely electrically or electromechanically or mechanically. The signals 345,345, and in Germany March 13, 1928.

may be provided in closeproximity of the stop motion feeler mechanism, e. g. on the feeler bars ofthe creel, as in the embodiments illustrated, or on any other place of the creel, above it or on the warping machine itself without deviating from the scope of the invention. 1

In order that the invention can be more easily understood, several embodiments of the same are illustrated in the accompanying drawings, in which igure 1 is a sectional side view of the first embodiment,

Fi ure 2 is a similar view with some parts in ct er position,

Figure 3 is a front view of the creel of a warping machine of known design and equipped with the new indicating. mecha-' nism,

Figure 4: is a view similar to Figure 1 of another embodiment,

Figure 5 is a similar view with some parts in other position,

Figure 6 illustrates a board on which the electric or color signals or electro-magnetic drgp plate signals can be applied together.

igure 7 illustrates in a view similar to Fi ure 1a third embodiment, and

igure 8 is a similar view with some parts in other position.

As is to be seen from Fi re 3, in place of the usual thread guiding ars which guide the threads in the form of a ribbon from the bobbin to the warping machine, bar-shaped carriers 1 to 9 are provided on each side of the creel, which carriers have mounted-on them, instead of the usual eyelets for the threads, double-armed feelers or uide hooks 10, known in themselves, the num er of these feelers corresponding to the maximum num ber of threads of the individual group. As is to be seen from Figures 1 and 2, the feelers 10 age able to swing about a common shaft 11. 12 denotes an electrically conductive plate provided on each bar, which plates are conductively connected to a conductor 13 common to all plates. The conduit 13 in turn is electrically connected to the electromagnetic stop mechanism of the warping machine. 'Upon a thread breaking, the re- 100 spective feeler 10, owing to the greater weight of its longer arm, lowers into the position illustrated in Figure 2 whereby the circuit is closed and the machine automatically stopped. In place of the double-armed stop feelers 10, of course any other suitable feelers or stop members may be made use of. y

In the embodiment illustrated in Figures 1 and 2, an electric signal, e. g. an incandescent lamp 14, is provided for each of the thread guiding bars 1 to 9. The lamp 14: 1s

conductively connected both with the appurtenant contact plate 12 and with the metal rod or pipe 15 of the frame to which rod the other conduit is electrically connected. Upon thus a thread of a group or ribbon breaking and the feeler 1O falling down to position of Figure 2, the circuit is closed whereby not only the above-mentioned-aut-omatic stoppage of the machine is caused but also the lamp 14 is caused to light, so that the operator at once perceives in which of the groups a thread has broken. If a means for tripping an acoustic signal isprovided further in the circuit, this signal is tripped at the same time and its sound alarms the operator. Owing to the comparatively small number of threads in each group, a breakage of a thread will be noticed at once, whereby the object of the device is fulfilled. In place of connecting all threads of a group to one sole signal, asuitable subdivision of the group might of course be provided for.

In Figures 4' and 5 a signalling mechanism is illustrated in which the lamp signal described with reference to Figures 1 and 2 is replaced by the known electro-magnetic drop plate signal. During the operation of the machine the colored plate 16 is covered in known manner by a drop plate 17 which is held in posit-ion by a pawl 18 under the action of an electro-magnet 22. Upon a thread breaking and thus the circuit being closed, the pawl 18 releases drop plate 17 which by gravity falls forward into the position illustrated in Figure 5 and leaves the signal plate 16 free to be seen by the operator.

In Figure 6 a special board is illustrated that may be applied e. g. on the topof the creel or on the machine itself and serves to localize the electric light or color signals or electro-magnetic signals instead of distrib uting them at each individual thread guide bar of the creel- In this board a correspondingly numbered signal place is provided for each group of threads, each of these signals being connected to thecontact plate 12 of the respective feeler carrier 1 to 9.

Figures 7 and 8 illustratea purely mechanical embodiment of the invention. In this embodiment the thread guiding bar 1 has swingingly mounted on it as in the embodiment described the feelers 10 which act also in the described manner. The contact plate 16 of the stop mechanism of the machineis painted on its side turned toward the operators stand with a brightcolor. A drop plate 19 covers the bright surface of plate 16 as long as no breakage of a thread occurs, and is held in covering position by a hook bar 20, the lower end of which is hingedlyconnected to a wire yoke 21. The latter is mounted for swinging motion on the shaft 11, and its middle portion is ofsuch length as to engage all feelers 10 belonging to an individual group of the respective thread guide bar. Now, upon one of the feelers 10 falling down owing to the breakage of a thread, Figure 8, the feeler shifts the respective hook bar 20 upward, whereby the cover plate 19 is released and falls down so that the brightly colored plate'12 is free to be seen by the operator. scribed mechanism may be modified in any suitable manner allowing of the object aimed at to be obtained, provided always that one single indicating or signalling device is controlled bya plurality of feelers.

Claims:

1. In apparatus of the classfdescribed, a support, said support comprising a straight rod, sets of rigid conductive elements sup,

Of course the deported by said support and projecting laterally thereof,each of said sets comprising a pair of parallel elements, a series of guide hooks mounted on one of the elements a of each set, each of said hooks being normallyheld-out of contact with the other element of its associated set by the tension of a thread engaged thereby but being adapted to upon breakage of such thread, and a separate electric signalling circuit associated with each of said sets and completed upon such movement of any guide hook of a respective series. I

2. Apparatus according to claim 1 according to which the support is electrically conduct-ive and one of the elements of each set is in electrical connection therewith, the sup- 7 port forming a part of the circuit.

3. Apparatus according to claim 1 according to which one element of each set is in connection with the similar elements'of the other sets through a common conductor.

4. Apparatus according to claim 1 according to which the support is electrically conductive and one of the elements of each set is in electrical connection therewith, the 8 100 move into contact Wit-h said other element the support, each of said bars having a thread-guiding edge parallel to its associated set of conductive elements. 7 a 7 In an apparatus of the type described, a support, a pluralit of rigid insulating bars supported by sai support and projecting laterally thereof, each of said bars carrying a conductive plate along one edge of said bar, a conductive rod arranged parallel to each of said bars and their associated plates, a plurality of conductive guide hooks pivoted on each of said rods, each of said' hooks being normally held out of cont-act with its associated plate by the tension of a thread engaged thereby but being adapted to move into contact with said plate upon breakage of said thread, and a separate electric signal- I ling circuit associated with each associated 7 rod and plate and completed upon such movement of any guide hook of a respective group. -The foregoing specification si ned at Cologne, Germany, this 21st'day o February, 1929. v V

WILHELM REINERS. GUSTAV KAHLISCH.

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